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POshort function in c - don't understand what's wrong
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copied!<p>I'm writing a function that just calculates the "complementary" strand of DNA, meaning replaces C with G, T with A, and so on. </p> <p>this is what I wrote:</p> <pre><code>#include <stdio.h> #include <string.h> #define SIZE 70 int isLegitSequence(char sequence[]); void getComplementaryStrand(char complementary[],char sequence[]); int findSubSequence(char sequence[],char subsequence[]); int findSubComplementary(char sequence[],char subcomplementary[]); void cutSequence(char sequence[],char tocut[]); void checkDNAList(char data[][SIZE],int rows,char sequence[]); void main(){ char dnaSequence[SIZE]; char compDnaSequence[SIZE]; printf("Enter a DNA Strand\n"); gets(dnaSequence); printf("%d\n",isLegitSequence(dnaSequence)); getComplementaryStrand(compDnaSequence,dnaSequence); puts(compDnaSequence); } int isLegitSequence(char sequence[]){ int i=0; while (sequence[i]){ if(sequence[i]=='A'||sequence[i]=='C'||sequence[i]=='G'||sequence[i]=='T'); else return 0; i++; } return 1; } void getComplementaryStrand(char complementary[SIZE],char sequence[SIZE]){ int j=strlen(sequence)-1,i; for(i=0;sequence[i];i++,j--){ if(sequence[i]=='A') sequence[j]='T'; else if(sequence[i]=='C') sequence[j]='G'; else if(sequence[i]=='G') sequence[j]='C'; else sequence[j]='A'; } complementary[strlen(sequence)]='\0'; } </code></pre> <p>However, this is what I get when I run the program:</p> <pre><code>Enter a DNA Strand CGCTC 1 ╠╠╠╠╠ Press any key to continue . . . </code></pre> <p>This is my first time using functions, so I'm not sure what I did wrong here. Would appreciate help, but in the scope of my understanding, namely very very basic. </p>

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